Pump.



PATENTED APR. 4, 1905.

A. E. KEPNER.

PUMP.

APPLIUATION FILED Nov. 5, l1903.

UNITED STATES Patented April 4, 1905.

AARON E. KEPNER, OF LEMON, CALIFORNIA.

r PUMP.

SPECIFICATION forming part of Letters Patent No. 786,500, dated April 4,1905.

Application led November 5, 1903. Serial No. 179,886.

To a/ZZ whom, it may concern.-

Be it-known that I, AARON E. KEPNEP., a citi- Zen of the United States,residing at Lemon, in the county of Los Angeles and State of California,have invented a new and useful Pump, of which the following is aspecification.

One object of this invention is to provide a pump having a plunger soconstructed that it is practically impossible for sand or other sedimentcarried by the Water or other liquid which is being pumped to work inbetween the plunger and the cylinder, which is a frequent source ofannoyance in pumps as ordinarily constructed and which causes cutting ofthe rings and cylinder and excessive wear of the same and consequentfriction.

Another object is to increase the effectiveness of the pump by aconstruction which will perform heavier duty with a given power thanwill pumps as heretofore constructed with the same power, theconstruction being such that the weight of the plunger and rod, with itsattached head, act by gravity in assisting the forcing up of the water.

The accompanying drawings illustrate the invention` and referring to thesame- Figure l is a view, partly in section, of the invention,showingthe pump in position. Fig. I1 is a side elevation of the upper worksillustrated in Fig. I. Fig. HI is a vertical sectional view through theplunger.

1 designates a supporting-base.

2 designates a pump-cylinder which is immersed in the water or otherliquid to be pumped and which is supported from the base 1 by suitablestandards 3.

4 designates ina general way the plunger, which is carried by a hollowrod 5, which is driven through the medium of a suitable pumphead.

Referring more particularly to Fig. lll, 6 is a thimble, to the upperend of which is screwed a cap 7, having lugs 8, and which is screwed tothe lower end of the hollow rod 5. The lugs 8 have shoulders 9 somewhatabove the upper edge of the thimble 6, and resting upon the upper edgeof the-thimble 6 is a puppet 10. The lower edge of the thimble 6 isprovided with a flange 11, upon which rests an annular cupped leatherpacking 12, surl mounted by a space-ring 13, which latter is nestedwithin a second cupped leather 14, the free edge of which lies at thebottom. 15 is another annular cupped leather similar to the leather 14,but which is arranged with its free edge at the top. Then the thimble 6is screwed into the cap 7, the three leathers 12, 13, and 14 are tightlyheld in place.

34 is an ordinary check-valve at the bottom of the cylinder.

At a suitable distance above the ground the pipe 5 is provided withadischarge-T 16. As the plunger is moved up and down by the pipe 5 thefollowing action occurs: Upon the downstroke of the plunger the upwardrush of water or other liquid exerts a pressure against the leather 12which spreads the same and tightly forces its walls into closeengagement with the walls of the cylinder 4, thus practically preventingthe entrance of any sand or sediment between the leather 12 and thecylinder-walls, and as at this time the water which is adjacent theplunger is in movement the sediment or sand is carried in suspension, sothat it is practically impossible for sand to get in between the leather12 and the cylinder 4 during the downstroke of the plunger. As theplunger moves downward the puppet 10 is raised by the upward rush ofwater until it strikes the shoulders 9, and the water rushes around theedge of the puppet 1() and thence into the hollow rod 5, through whichitis forced up and is discharged through the T 16. Upon the upstroke ofthe plunger the puppet 10 seats itself, retaining the amount of waterwhich is contained within the pipe 5, and as the plunger moves up theleather 12 rides with little friction against the walls of the cylinderfor the reason that its free edge is at the bottom and there is nointernal pressure to force it against the cylinder. During the upstrokeif by any possibility there should have accumulated some sand betweenthe leather 12 and the cylinder-walls the same either escapes by fallingor by being rolled or scraped away from the leather as the latter movesupward, the walls of the leather yielding inwardly and permitting theeasy downward escape of the sand.

T he leathers 14 and 15 form auxiliary packlOO ing designed to reducethe wear upon the leather 12 by distributing the area of bearingsurfacewhich is in contact with the cylinderlwalls, and they prevent any waterfrom getting above the plunger inside of the cylinder. VI regard theabove features for keeping' the plunger free from sand as the mostimportant features of my invention and very valuable.

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

A cylinder, a plunger therein comprising a thimble, a cap screwed to theupper end thereof and provided with inwardly -projecting lugs radiallydisposed and having shoulders, a valve resting on the upper edge of thethimble being guided in its upward movement by said lugs and itsmovement being limited by said shoulders, a flange on the lower edge ofsaid thimble, an annular cupped leather resting against the flange, aspace-ring encircling the thirnble and resting on said leather, anotherannular cupped leather nested over the space-ring, another annularcupped leather resting on the last-named leather and reversely arranged,said three leathers and space-ring being clamped between said flange andsaid cap, a check-valve at the lower end of the cylinder, and a hollowrod screwed to the cap for operating the plunger.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, at Los Angeles, in the county ofLos Angeles and State of California, this 29th day of October, 1903.

. AARON E. KEPNER.

Witnesses:

GEORGE T. HACKLEY, JULIA TowNsEND.

